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             AUSCERT External Security Bulletin Redistribution

       Cisco Unified Communications Domain Manager Restricted Shell
                           Escape Vulnerability
                                4 July 2019


        AusCERT Security Bulletin Summary

Product:           Cisco Unified Communications Domain Manager
Publisher:         Cisco Systems
Operating System:  Cisco
Impact/Access:     Increased Privileges -- Existing Account
                   Unauthorised Access  -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-1911  

Original Bulletin: 

- --------------------------BEGIN INCLUDED TEXT--------------------

Cisco Unified Communications Domain Manager Restricted Shell Escape

Priority:        Medium

Advisory ID:     cisco-sa-20190703-cucdm-rsh

First Published: 2019 July 3 16:00 GMT

Version 1.0:     Final

Workarounds:     No workarounds available

Cisco Bug IDs:   CSCvj07167



CVSS Score:


  o A vulnerability in the CLI of Cisco Unified Communications Domain Manager
    (Cisco Unified CDM) Software could allow an authenticated, local attacker
    to escape the restricted shell.

    The vulnerability is due to insufficient input validation of shell
    commands. An attacker could exploit this vulnerability by executing crafted
    commands in the shell. A successful exploit could allow the attacker to
    escape the restricted shell and access commands in the context of the
    restricted shell user, which does not have root privileges.

    Cisco has released software updates that address this vulnerability. There
    are no workarounds that address this vulnerability.

    This advisory is available at the following link:

Affected Products

  o The information provided in this advisory is the best available information
    as of the time of publication. Please consult the Release Note Enclosure on
    any associated bug ID for the most complete, accurate, and up-to-date

    When considering software upgrades , customers are advised to regularly
    consult the advisories for Cisco products, which are available from the
    Cisco Security Advisories and Alerts page , to determine exposure and a
    complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded
    contain sufficient memory and confirm that current hardware and software
    configurations will continue to be supported properly by the new release.

    If additional information is needed, customers are advised to contact the
    Cisco Technical Assistance Center (TAC) or their contracted maintenance

    Vulnerable Products

    At the time of publication, this vulnerability affected Cisco Unified CDM
    Releases 11.5(3) PB3 and prior.

    Products Confirmed Not Vulnerable

    Only products listed in the Vulnerable Products section of this advisory
    are known to be affected by this vulnerability.

    Fixed Releases

    At the time of publication, Releases 11.5(3) PB4 and later contained the
    fix for this vulnerability.


  o There are no workarounds that address this vulnerability.

Exploitation and Public Announcements

  o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
    any public announcements or malicious use of the vulnerability that is
    described in this advisory.


  o This vulnerability was found during internal security testing.

Cisco Security Vulnerability Policy

  o To learn about Cisco security vulnerability disclosure policies and
    publications, see the Security Vulnerability Policy . This document also
    contains instructions for obtaining fixed software and receiving security
    vulnerability information from Cisco.


  o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/

Revision History

  o +---------+---------------------------+---------+--------+---------------+
    | Version |        Description        | Section | Status |     Date      |
    | 1.0     | Initial public release.   | -       | Final  | 2019-July-03  |

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